#424B66#424B66

#424B66 is a dark, muted blue. Relative luminance 0.071; OKLCH L 41.6% C 0.047 H 270.0°. Best body text is #FFFFFF at 8.64:1 contrast (WCAG AA passes).

Color values

HEX	#424B66
RGB	rgb(66, 75, 102)
HSL	hsl(225, 21%, 33%)
HSV	hsv(225, 35%, 40%)
CMYK	cmyk(35.3%, 26.5%, 0%, 60%)
CIE-LAB	lab(32.14, 3.65, -16.89)
CIE-LCH	lch(32.14, 17.28, 282.20°)
OKLab	oklab(41.63% 0 -0.0468)
OKLCH	oklch(41.63% 0.047 270)
XYZ	xyz(7.1604, 7.1494, 13.5705)
Luminance	0.0715 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#424B66 #665D42

analogous

#425D66 #424B66 #4B4266

triadic

#424B66 #66424B #4B6642

tetradic

#424B66 #66425D #665D42 #42664B

square

#424B66 #66425D #665D42 #42664B

split-complementary

#424B66 #664B42 #5D6642

monochromatic

#12141C #2A3041 #424B66 #5A668B #7A85A9

Accessibility & contrast

On white

8.64

#424B66 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.43

#424B66 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #424B66

8.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##424B66	#FFFFFF	#000000	##FFFFFF
##424B66	1.00	8.64	2.43	8.64
#FFFFFF	8.64	1.00	21.00	1.00
#000000	2.43	21.00	1.00	21.00
##FFFFFF	8.64	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#424D67

Deuteranopia (green-blind)

#3F4A65

Tritanopia (blue-blind)

#385054

Achromatopsia (no color)

#4C4C4C

Design tokens & code

CSS

--color: #424b66;
/* rgb */ color: rgb(66, 75, 102);
/* oklch */ color: oklch(41.6% 0.047 270.0);

Tailwind

colors: {
  custom: {
    50: '#777d91',
    500: '#424b66',
    950: '#000000',
  },
}

SCSS

$custom: #424b66;
$custom-light: #777d91;
$custom-dark: #000000;

JSON

{
  "hex": "#424b66",
  "rgb": {
    "r": 66,
    "g": 75,
    "b": 102
  },
  "hsl": {
    "h": 225,
    "s": 21.429,
    "l": 32.941
  },
  "oklch": {
    "l": 0.4163,
    "c": 0.04678,
    "h": 270
  },
  "luminance": 0.0715
}

Semantic roles & 50–950 ramp

primary

#424B66

secondary

#958B6F

accent

#A96ABE

background

#F7F7F8

surface

#EDEEF0

border

#C8C9CB

text

#09090D

muted

#7B7B7D

Preview Lab

Preview with #424B66

Body copy rendered with the generated semantic roles for this colour.

Preview Lab → · Contrast checker → · Palette generator →